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Guerledan Lake

In the heart of Brittany, Guerlédan Lake stretches into the Blavet valley. Bordered by a forest, the 400 hectares of the lake make up a vast area for nature leisure activities.

Where is the Guerledan Lake in Brittany ?

The must-see at Guerlédan Lake

- Discover the lake on foot, mountain bike or canoe.

- Visit the Abbey of Bon Repos, which has become a cultural place.

- Explore the old Forges des Salles in the Quénécan forest.

- Stroll along the canal from Nantes to Brest.

sunset on Lake of guerledan © Mathieu Brient

© M.Brient

History of a sunken world

On the border of the Côtes d'Armor and Morbihan, Guerlédan Lake  is the result of the construction between 1923 and 1930 on the Blavet river of a hydroelectric dam. It has a surface area of 304 hectares, is 12 kilometres long and 45 metres deep at the foot of the dam, making it the largest artificial lake in Brittany.

The Canal de Nantes à Brest, which was dug by convicts under Napoleon, is intimately linked to the lake. Indeed, the creation of the dam flooded the Blavet valley, cut off the continuity of river traffic and swallowed up 17 locks putting an end to its economic use .

With 360 km and 236 locks, it offers walkers the spectacle of unspoilt nature and is a delight for hikers thanks to the major routes that take it like the Velodym... To capture the spirit of this country, nothing beats the Voie Verte V6 which leads on foot or by bike from one end of the Côtes d'Armor to the other. Along the way, the canal unveils inland Brittany.

An industrial mark

In the heart of the Quénécan forest, the Forges des Salles bear witness to the working life in the iron and steel industry in the 18th and 19th centuries. The old ironworks village has been preserved and left intact since its operation was stopped in 1877. You can visit the workers' and foremen's lodgings, the forge master's house, see the industrial installations... in a bucolic setting, only a few kilometres from Guerlédan Lake.

Cultural stop at Bon Repos

On the banks of the canal, this former Cistercian abbey founded by Alain III de Rohan hosts temporary art exhibitions as well as a virtual reality tour that plunges you back into the history of central Brittany.

Attend the Bon Repos Sounds and Lights during the first fortnight of August! A 2-hour night show played by 350 extras and 30 riders on a 2 hectare stage. Rhythmed by a bewitching musical band and pyrotechnic effects, illustrated by monumental projections on the abbey's façade, the stages take you into a breathtaking show, rich in emotions, where the unexpected awaits you.

Bon Repos Abbey in Brittany © Michael Gaylard

© M.Gaylard

Hiking and nature activities

Lovers of nature sports will have a great time: water skiing, mountain biking, horse riding, hiking, climbing, canoeing, kayaking or paddle... Whether you are in Beau Rivage, in the cove of Guerlédan, you will have a wide range of possibilities to take advantage of this gigantic playground in the heart of Brittany.

Thanks to the mountain bike station, there are no less than 12 signposted circuits that will allow beginners and more experienced riders to enjoy a thrill. For fishermen, go to Landroenec where the pontoon allows everyone to come and tease the perch, pike-perch or pike. For the most motivated, don't hesitate to go for a walk around the lake... well equipped, this walk promises beautiful discoveries on the natural side!

A cruise on the lake

The ideal way to discover Lake Guerlédan remains the speedboat: you will be rocked along the water by the rolling of the cruise boat. Embark aboard the Duc de Guerlédan II and enjoy a 1.5 hour commented cruise.

On the Duc de Guerlédan I, during your 3-hour ride, enjoy your lunch on board... Discovering this majestic place with your feet under the table, isn't it an original way to go for a walk?

See also

Mean Ruz lighthouse, Ploumanac'h in Côtes d'Armor, Brittany ©Olivier Fouillard

Pink Granite Coast

Walking in the medieval town of Dinan, Brittany © Hernan Pinera


Frehel lighthouse in Brittany © Davide Gabino

Cape Frehel - Cape of Erquy

windmill in Brehat Island © Peter Stenzel

Brehat Island

Harbour Island off the coast of Saint-Quay-Portrieux © Melina 1965

Saint-Brieuc Bay

Sculptures in Valley of the saints © Momoly

The Valley of the Saints